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authorMike Frysinger <vapier@gentoo.org>2008-12-11 10:08:00 +0000
committerMike Frysinger <vapier@gentoo.org>2008-12-11 10:08:00 +0000
commit6ff6eb1350c00bde1e64eeabd676e477402d5b9c (patch)
tree2d1b841b2a21b919e83087361c5dce106ec586a2 /libc/sysdeps/linux/common
parenta3368fd4fbb42eff5ca5b364218204f751e27e0d (diff)
create arch-generic brk() based on blackfin one
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/brk.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/brk.c b/libc/sysdeps/linux/common/brk.c
new file mode 100644
index 000000000..18836ba59
--- /dev/null
+++ b/libc/sysdeps/linux/common/brk.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+libc_hidden_proto(brk)
+
+#define __NR___syscall_brk __NR_brk
+static inline _syscall1(void *, __syscall_brk, void *, end)
+
+/* This must be initialized data because commons can't have aliases. */
+void * __curbrk attribute_hidden = 0;
+
+int brk(void *addr)
+{
+ void *newbrk = __syscall_brk(addr);
+
+ __curbrk = newbrk;
+
+ if (newbrk < addr) {
+ __set_errno (ENOMEM);
+ return -1;
+ }
+
+ return 0;
+}
+libc_hidden_def(brk)